JoJo's Bizarre Adventure is a complex series, consisting of a number of different parts, each taking place in different settings and following distinct characters. While certain recurring themes and motifs tie the series together, the variety of the parts means that fans are bound to prefer some over others. As it happens, though Stardust Crusaders is sometimes accused of being unoriginal, it actually changed Shonen forever.
https://screenrant.com/jojos-bizarre-adventure-stardust-crusaders-redefined-shonen/